Fastener applying device



June 18, 1957 H. J. SPENCER 2,795,787

FASTENER APPLYING DEVICE Filed April 9, 1953 4 sheets-sheet 1 June 18,1957 H. J. SPENCER FASTENER APPLYING DEVICE 4 Sheets-Sheet 2 Filed April9, 1953 INVENTOR.

June 18, 1957 H. J. SPENCER FASTENER APPLYING DEVICE 4 Sheets-Sheet 3Filed April 9, 1955 1N V EN TOR.

June 18, 1957 H. J. SPENCER 2,795,787

FASTENER APPLYING DEVICE Filed April 9, 1953 4 Sheets-Sheet 4 INVENTOR.

nited StatCS Pat-ent FASTENER APPLYING DEVICE Herman J. Spencer,Ingomar, Pa.

Application April 9, 1953, Serial No. 347,718

6 Claims. (Cl. 149) This invention relates generally to improvements instapling machines and more particlarly to the type of stapling deviceheld and supported in the hand of the operator and actuated by agripping movement thereof.

One object of the invention is to provide a better means for connectingthe driver and its actuating means wherein there will be no chance ofthe relatively thin driving .blade becoming bent during the driving ofstaples.

Another object of the invention is to provide a pivotally mounted staplesupport member which is of rigid con- ;struction and therefore will givea more positive support :as it travels with a staple as the latter isdriven.

A further object of the invention is to provide an 'implement of thetype described wherein on manual operation, the jaws are moved to gripthe material without .the usual necessity of having the hand leverpivot, there- .by providing Imeans whereby the jaws can be opened`.wider for insertion of material and to provide a machine .in whichlonger legged staples can be used.

Other objects of the invention reside in certain novel .side of thestaple magazine so as to enable the operator ;to retract the staplefeeding means when loading of .the

`device is desired.

A still further object of the invention is to provide a betterarrangement of the parts and their relation to each tother forreciprocating the driver and for urging the device to grip material tobe stapled.

In the accompanying drawings which illustrate a present preferredembodiment of my invention- Figure 1 is a sectional view in sideelevation showing a stapling machine embodying one arrangement of theoperating levers in starting position with the driver in raisedposition;

Figure 2 is a View in side elevation showing the device in Figure l withthe jaws as having moved towards each other;

Figure 3 is a sectional view taken through Figure l at III-III toillustrate the method by which the upper end of the driver blade issecured to a tube type driver head;

Figure 4 is a view in side elevation showing the device in Figure 2 withthe jaws completely closed and the driver as having been lowered todrive a staple;

Figure 5 is a cross-section of Figure 2 at V-V to illustrate how theactuating lever rests on an extruded portion of the magazine framemember;

Figure 6 is a plan view of the slotted tube used to retain the driverblade in engagement with the driver head Figure 7 is an end view ofFigure 6;

Figure 8 is a side elevation of a modified construction shown in Figure1, illustrating the parts in their starting position with the driver inlowered position relative to the frame member, and with an upper pivotedhand grip member resting on the magazine frame member;

Figure 9 is a view in side elevation showing the device 'in Figure 8with the jaws having been movedtowards Patented June 18, 1957 2 eachother land the driver as having been raised in relation to the magazineframe member; g

j Figure 10 is a front view and Figure 11 is a side elevation ,view ofthe rigid type staple support member;

Figure 12 is a plan view and Figure 13 is a side elevation View of thedriving blade;

Figure 14 is a front elevation of the machine head and Figure l5 is asectional side elevation view of Figure 14.

Figure 16 is an enlarged central sectional view of the driver assemblyparts shown in Figures 1. and 3;

Figure 17 is a view in side elevation showing the device in Figure 2with the actuating lev'er as having been raised upwardly to give accessto the staple feeding pusher;

Figure 18 is a partial side elevation of Figure 8 showing the hand-grippart as having been swung from its overlying position over the stapleguiding track to a position which gives access to the staple guidingtrack;

Referring to the drawings, and particularly to Figures l, 2 and 3, thestapling machine comprises generally a magazine frame member 1 whichcarries a staple ejection chute at its free end and means for feedingstaples to the ejection chute and a reciprocably mounted driver assembly5 to be described later for ejecting the staples S.

An anvil member 2 carries a staple clinching means 80 on its free end,the latter being movable towards the free end of member 1 to gripmaterial there between and to clinch a staple S driven from the ejectionchute 8.

A driver actuating lever 3 is connected to rigidly reciprocate thedriver assembly 5 and to urge the free end of magazine frame member 1towards the free end of the anvil member 2 by action of a hand lever 4pivoted to the anvil member 2 on shaft 43 and through links 6 whichconnects the hand lever 4 to the actuating lever 3. The magazine framemember 1 and the anvil member 2 are pivoted in relation to each otheradjacent their opposite ends by pin 3S. See Figures 1, 2 and 4.

The magazine frame member 1 (Fig. 5) is comprised of an elongatedU-shaped frame which has a web 9 integral with spaced apart, aligned andupwardly extending side anges 9a and the latters one ends are formedtowards and in alignment with each other to provide spaced aparttransversely extending vertical anges 10 with the latters alignedvertically extending edges 10a forming the sidewardly walls of theejection chute 8. The opposite ends of flanges 9a of the magazine framemember 1 are pierced to receive pin 38 and at a point between theirends, anges 9a have aligned shoulders 41 extending a short distancetransversely outwardly to provide a seat for lugs 39 of the actuatinglever 3. See Figures l, 3 and 5.

A U-shaped head portion 11 (Figures 14 and 15) has a central web 13integral with side-portions 12 and the latter at their lower ends aresecured to the outward vertical sides of the frames anges 9a at a pointadjacent the latters transversely formed flanges 10; side-portions 12 ofthe head 11 contain aligned closed end elongated slots 26 which extendvertically above the frames flanges 9a to provide a guide for a driverassembly 5. The lower portions of the sides 12 of the head 11 are formedinwardly towards each other and are spaced apart to form verticalflanges 50 and the latters rearward surfaces 50a act as the front wallof the ejection chute 8. See Figures 1, 3, 14 and l5.

An elongated U-shaped staple guide 7 has the outside surface ofritsweb83 secured centrally tov the inside surface of the frames web 9 (seeFigure 5) and the upper edges 85 of the vertical flanges 84 of thestaple guide 7 form a track upon which the staples S ride in straddlefashion to the ejection chute 8. See Figures l and 5.y Extendinglongitudinally, overlying and spaced apart from edges 85 of the stapleguide 7 are hold-down members 49, as disclosed in my application No.305,943,

ent No. 2,755,473 on July 24, 1956, which are adapted l to movetransversely from overlying the staple guide 7 to a position whichexposes the staple guide for loading or removal of staples. See Figuresl and 5.

A pulley wheel 14 is mounted on pin x1-5 which is supported in"apertured openings in the iianges 84 yof the staple guide 7 at a pointnear the one end of staple guide 7 which terminates at the 'ejectionchuteS. A feeder spring 16 is passed around pulley 14 and has 'one endsecured to a lug 17 which extends upwardly from the web portion 83 ofstaple guide 7 and its other end secured to a lug 18 which extendsdownwardly from the web loff the inverted U-shap'ed staple pusher 19,the latter being urged by the pull of spring 16 to feed the staples Stowards the ejection chute 8.

The actuating lever 3 is an elongated inverted `U shape, has a webportion 81 used as a hand-.grip which is integral with downwardlyextending flanges 82. At one "of their ends iianges -82 are adapted tobe connected to operate the driver assembly and adjacent their oppositeends flanges 82 ofthe actuating lever 3 have downwardly extending curvedlugs 39 for slidably mounting the actuating lever 3 on Vthe magazineframe 1 to urge the latter towards the anvil lever 2. Aligned holes arepierced intermediate the ends of liianges 82 of the actuating lever 3 toreceive rivets 45 for connecting links 6 to lever 3. See Figures l and2.

The anvil member 2 is U-shaped in cross-section, it has a web 2aintegral with side walls 2b, the latter are pierced at their oppositeends to receive pin 38 and walls 2b are pierced intermediate their endsto' receive pin 43. An anvil 80 is secured to the one end of member 2for clinching a staple and gripping material.

The manually operated hand lever 4 shown in Figure l is of channel shapein cross-section with its rearward portion formed with a rounded bottomwall 4b providing a hand-.grip and its forward side walls 44 extendingupwardly at an angle to adapt them to straddle the sides of the anvilmember 2. A cross-pin 43 projects through and beyond holes in the sides2b of the anvil member 2 and into the side walls 44 of the `hand lever lvfor pivotally mounting the latter on the anvilrmember 2. The upper endsof the side walls 44 are pierced to Vreceive rivets 46v'for pivotallyconnecting lever 4 to the opposite ends of links 6. See Figure 1.

The driver assembly '5 comprises a cylindrical tube-like driver head 23containing a slot -25 which extends along the length of its diameter andhas a hole l24 pierced centrally in its diameter opposite from its slotu2S. ASee VFigures ll, 3 andfZO. A driving'bla'de retainer 27 is azexible cylindrical tube containing a slot 30 which extends along thelength of `its diameter and centrally located along one side of its slot30 is a lug V29 which protrudes into slot 30. A hole 28 is piercedcentrally at a point on the ldiameter of the driving blade retainer 27opposite the latters slot 30. See Figures 6 and 7. A driving blade 20 isprefer'- ably made from at sheet metal, is rectangular in shape, has acentrally located lug 2Y1extending from one of its short lsides and hasa hole 22 pierced centrally along its length a short distance from lug21. See Figures l2, 13 and 20. 4It will be notedin Figure 3 thatthe-driver head 23 is of greater length than the driving blade retainer27 `for reasonsA to be explained.

The parts of the driver assembly listed above are assembled together asfollows: The outside diameter of the driver head 23 (Fig. 20) 'isapproximately the same as the inside diameter of the exible drivingblade retainer 27. The 'driver head 23 is inserted inside of the drivingblade retainer 27 with their respective slots and centrally locatedholes in alignment with each other. The driver blade 20 is :forciblyinserted liatwise by its lug 21 and into slots 30 of the blade Vretainer27 and thereby wedges past the latters lug 29 totherebyslightly expandthe diameter of the blade retainer-27. The blade 20 is moved further,through slot 25 in the driver head 23 until lug 21 of the driver blade20 is in holes 24 and 28 in the driver head 23 and the blade retainer 27respectively and lug 2l of the driver blade 20 thereby preventslengthwise movement between the driver head 23 and the blade retainer27. See Figure 3. When lug 21 of the driver blade 20 has entered holes24 and 28 as explained above, the lug 21 end of the driving blade 20rests against the inside diameter of the driver head 23 and hole 22 ofthe driver blade 20 is lined up with and receives lug 29 of the bladeretainer 27 as the latter springs back toits unsprung diameter. Lug 29of the blade retainer 27 thereby holds the driver blade 20 in properalignment relative t'o the driver head 23. See Figures l, 3 and 20.

When in the device, the length of the driving blade retainer 27 extendstransversely in a horizontal plane between the side portions 12 of thehead 11 to be limited thereby from moving transversely in the device.See Figure 3. The driver head 23 extends transversely from thel 'centerof the device through and beyond the `closed end slots 26 of the sideportions 12 to be guided thereby during vertical movement. The portionsof the driver head 23 which extend beyond the side portions 12 of thehead 11 are entered into openings in flanges 82 of the actuating lever 3and the latter through its movement Ythereby reciprocates the driverassembly 5 in relation to the magazine 'iframe member 1 when a fasteneris to be applied. See Figures 2, 3 and 4.

The manner in which the anvil member 2 and the magazine frame member 1are moved to grip the material and the assembled driver 5 is lowered inrelation to the magazine frame member 1 to secure a staple in thematerial is shown in Figures l, 2 and `4 but will be de scribed later.

While the retainer 27 is described as being made from'resilient'material 'and containing a lug 29 along one redge protrudinginto its slot 30 for engagement with hole 22 of the driver blade 20 toretain the latter in engageme'nt -with the driver head 23, it will beapparent that a lug similar to lug 29 could be added to the driver head23 t'o `retain the driver blade 20 in engagement with the drivervhe'atzl 23.

The staple .support member 31 shown individually in Figures l-10 and v11is preferably made from `liat sheet metal. As shown in Figures l and l0,the staple support 'member 31 has its upper end formed into a hook 32,downwardly Vfromitshoolr 32 and formed forwardly is a bump section 33,slightly below its bump 33 are angled iianges V3'4 which extendforwardly at a downward angle and still further downward from its anglediianges 34 it has a toe 35 which extends horizontally ytowards theopposite end of the device. The toe 35 of the staple support member `31is adapted to kfit between the legs to contact and 'thereby rigidlysupport the underside of the crown of a staple as the latter'is shearedfrom a stick of staples and .thereafter ejectedfrom the device intomaterial. In the starting position shown in -Figure l, the driverassembly S is in raised position relative to the magazine yframe 1 and astaple S has been fed into the ejection chute 8 slightly beneath thedriving blade 20 ofthe driver assembly 5. The hook 32 of -the staplesupport member v31 is tted over and extends half-way downwardly aroundthe driving blade retainer 2'7 of the driver assembly 5 and the toe 35of staple support member'3`1 is 'between the legs and under the crown ofthe staple S. The bump section 33 of the staple support member-31 isagainst the rearward vertically extending side 13a-of web 13 ofthe headmember 1l to .prevent the staple support member 31 from pivoting.clockwise on the assembled driver 5 to thereby retain the 1toe.35oil-.the staple support member '31 in staple supporting position. 'SeeFigure l.

When `thedriver vassembly "Sis moved vertically downward in `relation tothe magazine frame member 1, the

following results: The driver .blade 20 of the driver assembly `almostimmediately contacts the upper 'side of the crownY of the staple S andurges the latter vertically fdownward into almost immediate contact withtoe 35 of staple support member 31. In the latter position, the drivingblade retainer 27 of the driver assembly 5 has moved downwardly slightlyway from contact with that portion of hook 32 of the staple supportmember 31 which was fitted over the driving blade retainer 27. Furtherdownward movement of the driver assembly 5 moves the staple S andthereby the staple support member 31 through the latters toe 35vertically downward .with the bump section 33 of the staple supportmember 31 rubbing the vertically extending side 13aY of web 13 tothereby hold toe 35 of staple support member 31 in staple supportingposition. Note in Figures 4 and 15 that web 13 of head 11 is angledforwardly and downwardly at 13b to provide space into which bump 33 ofthe staple support member 31 can move to allow the latter to pivotclockwise on the driver assembly 5 as the latter nears the end ofvitsdownward movement during. the ejection of the staple Also note inFigures 4, 14v and 15, that the upper edges 40 of llanges 50 of head 11are adapted to be contacted by the angled anges 34 of the staple supportmember 31 as the latter is moved downwardly to thereby pivot the staplesupport member 31 in relation to the driver assembly 5. As the driverassembly 5 moves downwardly near the end of its downward movement toeject the staple S, flanges 34 of the staple support member 31 contactedges 40 of anges 50 of head 11 and thereby pivot the staple supportmember .31 clockwise in relation to the driver assembly 5 to 'therebymove toe 35 from its staple supporting posiation and to move bump 33into the space provided by the angled end 13b of web 13 of head 11.After toe 35 of :staple support member 31 has been moved from its staplesupporting position, the driver assembly 5 continues to move a shortdistance further downwardly to completely eject the crown of the stapleS past toe 35.. See Figure 4.

As the driver assembly 5 is moved upwardly from the position shown inFigure 4 to that shown in Figure l, the following takes place: Thedriver assembly 5 moves upwardly a short distance into contact with thatportion of hook 32 of the staple support member 31 which was fitted overthe driving blade retainer 27 of the driver assembly 5 and thereby movesthe staple support member 31 upwardly. As the staple support member 31is moved upward, as just described, the latters bump 33 contacts theangled section 13b of web 13 of head 11 to thereby pivot the staplesupport member 31 counterclockwise in relation to the driver assembly 5to thereby move toe 35 of the staple supporting member 31 into staplesupporting position. When the driving blade 20 of the driver assembly 5has been raised completely to the position shown in Figure 1,l thesidewardly extending ends 35a of toe 35 of staple support member 31 areadapted to contact shoulders 36- of tlanges 50 of head 11 to stop upwardmovement of toe 350i the staple support member 3l to position the latterso a staple S can be fed into the ejection chute 8. See Figures 1, 3, 14and 15. Y Y

Referring to the apparatus shown in Figures 1, 2, 4 and 18: In Figure 1,the starting position, the anvil member 2 and the magazine frame member1 have their free ends spaced apart with their opposite ends pivotedtogether by pin 38. The driver assembly 5 is in raised relation in themagazine frame member 1 and a staple S has been fed into the ejectionchute 8 beneath the driving blade 20 of the driver assembly 5. One endof the actuating lever 3 is pivotally connected to the driver head`23 ofthe driver assembly 5 to reciprocate the ,latter` and lugs 39 of theactuating lever 3 are slidably resting on the shoulder portions 41 ofthe magazinerframe member 1 to rigidly urge the latters free end towardsthe free end of the anvil member 111e lever 4 is pivoted on the anvilmember 2 intermediate' the latters ends by pin 43 to thereby urgethefree end of the anvil member 2 towards the free end of the magazineframe member 1 to grip material and clinch a staple. The side walls 44of the hand lever 4 extending upwardly along both sides of the deviceare pivotally connected to the rearwardly positioned ends of links 6 byrivets 46. l The forwardly yends of links 6 are pivotally connected tothe actuating lever 3 at a point between the latters ends by rivets 45.Note in Figure 1 that rivets .46 connecting vthe side walls 44 of thehand lever 4 to the rearwardly ends of links 6 are positioned betweenpin 38 and rivets 45 close by an imaginary line extending substantiallylongitudinally `of the device through pin 38 and rivets 45. Also jnotein Figure 1 that pin 43 connecting the hand lever.4rto the anvil member2 is a distance vertically below the above-mentioned imaginary line andit will be apparent that pressure applied on the hand lever 4 `to rotatethe latter counter-clockwise on pin 43 `will be transmitted insubstantially a longitudinal direction along saidimaginary line to links6 and then to the actuating lever 3 through rivets 46 and 45. Aslongitudinal movement of lever 3 and links 6 is not possible nordesired, the hand lever 4 is thereby stopped from rotatingcounter-clockwise on pin 43. However, manual pressure .applied on thehandgrip portion of the actuating lever 3 and the hand lever 4 willbodily move the latter upwardly and thereby the free end of the anvilmember 2 through pin 43 is moved upwardly towards the free end of themagazine frame member 1 with rivets 46 moving away from said imaginaryline of pressure upwardly in an arc around rivets 45. See Figure 2.

Continued manual pressure on the device after the parts have reached,the positions shown in Figure 2 will result as follows: The free end ofthe anvil member 2 will continue to move as before towards the free endof the magazine frame member 1 until said free ends are stopped bycontact with each other or by contactv with material placedtherebetween. However, when movement of said free ends towards eachother is stopped as described above, the hand lever 4 can now rotatecounter-clockwise on pin 43 and does so to thereby direct pressure at anangle across said imaginary line to rivets 45 via links 6 and rivets 46to thereby transmit pressure applied to hand lever 4 to the actuatinglever 3 to thereby move the latter downwardly in fastener applyingdirection. The pressure transmitted to the actuating lever 3 as justdescribed is partly transmitted'to the driver assembly 5 to actuate thelatter to apply a fastener and the balance of the pressure so applied tolever 3 is transmitted via the latters lugs 39 to shoulders 41 of themagazine frame member 1 to urge the latters free end to grip thematerial. See Figure 4. lIt will be noted in Figure 4 that during thefinal movement of the parts as described above, rivets 46 have movedfurther in an arc around rivets 45 to position the latter between rivets46 and pin 43 to thereby greatly increase the leverage advantage of thehand lever 4 during the fastener applying operation of the device. n f

Spring 37 extends vertically and it is positioned rearwardly from pin38, the latter being' the pivotof the magazine frame member 1 with theanvil member 2, spring 37 has one end attached to the rearmost end ofthe actuating lever 3 and has its other end detachably held by lug 42 ofthe anvil vmember 2 to thereby rock the actuating lever 3 on the latterslugs 39 to move the one end of lever 3 upwardly in relation to themagazine frame member 1 to the limit provided by the driver assembly 5contacting the uppermost ends of the closed end slots 26 in head 11 ofthe magazine frame member 1, to thereby retract and thereafter retainthe assembled driver 5 in raised relation to member. land to ,urge theNotice in'Figures 1, Zand 4 that the anvil member 2 has notches 47adjacent the pivot pin 38 of the magazine frame member 1 and the anvilmember 2 and that projections 48 on the magazine frame member 1 areadapted to contact notches 47 of the anvil member 2 to limit thedistance the free ends of the device can move apart.

Figure 18 illustrates the device shown in Figure l with the one endV ofspring 37 as having been removed from lug 42 ofthe anvil member 2 withthe actuating lever 3 las having been pivoted counter-clockwise on thedriver assembly to thereby raise the opposite end of the actuatinglever- 3 in relation to the magazine frame member l'to thereby exposethe latters staple guiding and feeding means to` provide access to thelatter.

A modified form of the device is shown in Figures S and 9. The magazineframe member 76 and anvil member 77 are pivoted together by pin 90 andsaid members contain the usual apparatus such as a staple clinehingmeans, a stapple driver, staplefeeding means, staple ejection chute etc.The driver actuating levers 51which extend along both sides of thedevice, are pivoted on the common pivot pin 90 and therefore levers 51do not transmit pressure to urge either of the members to grip thematerial. The arms 86 of the hand lever 78, employed in Figure 8, arepivoted to one end of links 5,4 by rivets 93, links 54 are pivoted attheir opposite ends, by rivets 92, to the driver actuating levers 51 toactuate the latter, and slots 52 of the driver actuating levers 51slidably connect the latter levers to the driver assembly 87 toreciprocate the latter. It will be noted in'Figures 8 and 9 thatoperation of lever 78 will move the anvil Aarm 77 towards the magazine land that continued movement of lever 78 would lower the actuating leversS1 in a mannerisimilar to the device shown in Figures l, 2 and 4 tolower the driver. However, to apply pressure on the magazine framemember 76 I employ a hand-grip lever 55 pivoted on pin 90 and it hastransversely extending flanges 56 which, inthe operative position shownin Figure 8, rest on the upper edges 94 of the side-walls 95 ofthemagazine frame member 76 at a point between the pivot of the memberswith each other and the ejection chute end of the magazine frame member76, for transmitting manual pressure applied on hand-grip lever SS to`the magazine frame member 76, to urge the latter members free endtowards the anvil member 77, to grip one sideof material,

Hand-grip lever 55, can be pivoted at least 180 clockwise on pin 90 tomove the hand-grip portion of lever 55 from overlying thestaple magazineto-give access to the latter yfor lretraction of the staple pusher andloading of staples as shown in Figure 18.

In. Figure 8, around pin 9.1 is coiled a spring 58, and has one-ofitslegs. 59 pressing against the inside portion of the webof the anvilmember 77 and its other legV 60 pressingl against the under-side of themagazine frame member 76 for urgingthe members apart and thereby urgiingthe hand lever 78 to pull links 5410 the starting position showninEigure 8 after a staple has been driven as explained above.

I claim:

1 In a fastenerdevice, a frame, a staple guide in said frame for guidingstaples, a driving 4channel at one end of said guide,` means iny saidframe for feeding staples along said guide to said driving channel, astaple driver, means mounting-'said driver fori-reciprocating movementin said driving channel, aV movable rigid staple supportmernber having atoe portion extending toward the other end of said guide into position,between the legs and under the crown of a staple fedv into said drivingchannel, connector means between said ldriver and said staple supportmember adapting1 the` latter tov-pivot and move bodily in relation, toSaid driver and for movingsaid staple'support memberinmeverse fastenerapplyingdireetion, means on said frame for limiting said upward movementof said ,l frame member 1 andanvil member 2 apart Se@ Figures 1 and 4driver and saidstaple support member in relation to said frame tothereby retain said staple support members toe portion in properposition to receive a fed staple, limited guiding means on said framefor engaging said support member to holdthe latters toe portion instaple supporting position under the crown of a staple as said drivermoves said staple in fastener applying direction and to thereby movesaid support member in the fastener applying direction, obstruction`means on'sfaid frame, cam means on said support member adapted tocontact said obstruction means as said support member is moved by saidstaple and the staple by `said driver for pivoting said support memberon said driver to shift the toe portion of said staple support memberfrom its staple supporting position, thereby permitting said driver tomove relative to said staple support member to complete the driving ofsaid staple, cooperating means between said support member and the endof the latters limited guide means on said frame for obstructing upwardmovement of said support member when said driver is retracted upwardadjacent to the limit permissible between the latter and said supportmember said cooperating' means at the end of said guide on said frameadapted tol cooperate with said support member to move the latters toeportion towards the other end of said guide and thereby into staplesupporting position as said support member is raised by said Idriver. Y

2.A in a fastener applying device, `a magazinefrarne member containing adriving channel and means for gripping one side of material at its freeend, an anvil member having means for gripping the opposite side of saidmaterial land for clinching a lstaple on its free end, pivotal connectormeans between said members to permit said free' ends of said members tomove towards each other to grip material to be stapled, means forfeeding staples to said `driving channel in said magazine frame member,a staple driver, means mounting said driver for reciprocating movementin said magazine frame member, an actuating lever operably connected tosaid driver to rigidly reciprocate the latter and shiftable connectormeans between said vactuating lever and one of said membersadapted torigidly transmit a part of the pressure applied on said driver-memberactuating lever to one of said members to rigidly urge a free end of oneof said members to grip one side of material, a hand lever pivoted ontheopposite member for rigidly urging the l-atters free end to grip theopposite side of said material, operable connector meansl between saidhand lever and said actuating lever adapted to rigidly transmit pressureapplied on said hand lever to said actuating lever at a pointintermediate the latters connections with said driver and said` onemember to thereby rigidly transmit a part of pressure applied on saidhand lever to said actuating lever to urge the latter to rigidlyreciprocate said driver and to rigidly move the free end of said onemember to grip one side of said material and the balance of the pressureso applied actingtogurge the free end of said opposite member to rigidlygrip-the opposite side of said material.

3. In a stapling machine, a driver head containing a slot on one of itssides Whichextends along its length, c0- operating retaining meansincluding a resilient means on said-driver head, a driver blade in saidslot, said` resilient means acting to retain said driver blade in said.slot.

4. In a stapling device, a pivoted .magazine frame member containing adriving channel and means for gripping oneside of material at its freeend, means in said magazine frame member for feeding staples to saiddriving channel, astaple driver, means mounting said driver forreciprocating movement in said magazine frame member, a pivoted anvilmember having'rneans for gripping the opposite side of said materialandfor clinching a staple on its free end, pivotal connectormeans-betweensaid member-s adapted to permit at least one of said members free endsto Ibe moved towards said others free end to grip said material therebetween, an actuating lever pivotally connected at one endfto said`driver to reciprocate the latter and having its opposite end 'pivotally'mounted on the device adjacent the latters opposite end, a hand leverpivotally mounted on said anvil member, a link pivotally connected tosaid hand lever and to said actuating lever with the pivotal connectionsof said link at the beginning of a fastening operation with the freeends of said members spaced apart being along a line which starts at thepivot of said members with each other and extends substantially acrossthe reciprocating path of said driver and thereby pressure applied onsaid hand lever at said beginning will not permit said hand lever torotate in relation to said anvil member but will permit said hand leverto be -bodily moved towards said line to thereby move the free end ofsaid anvil member towards the free end of said magazine frame memberwith the pivot of said link with said hand lever moving away from saidline in an arc around said links pivot with said actuating lever to aposition in which continued pressure on said hand lever will be directedthrough said link through the links pivotal connections to saidactuating lever in a direction which is at an angle across said line tothereby urge said actuating lever to reciprocate said driver to apply afastener.

5. A stapling device according to claim 4 characterized by means adaptedto be held in one hand and wherein said actuating lever has a hand-gripportion which overlies said means for feeding staples, means in thepivotal mounting of said opposite end of said actuating lever whichpermits the latter end to be freely raised upwardly in an arc inrelation to said magazine frame member to give access to said staplefeeding means.

6. A stapling device according to claim 4 characterized -by said handlever extending below said anvil member to form the lower part of ahand-grip means: an upper hand-grip means overlying said means forfeeding staples and it is pivotally mounted by one of its ends on thedevices opposite end preferably on the members pivot, abutment means onsaid upper hand-grip means adapted to rest loosely against said magazineframe member to transmit pressure applied on said upper hand-grip tosaid magazine frame member to urge the latters free end to gripmaterial, said upper hand-grip member adapted thereby to be pivoted tothereby move its abutment away from contact with said magazine framemember and to move it from overlying said staple feeding means to eX-pose the latter.

References Cited in the tile of this patent UNITED STATES PATENTS2,461,165 Lindstrom Feb. 8, 1949 2,481,892 Wampler Sept. 13, 19492,617,097 Spencer Nov. 11, 1952

